Troubleshooting - Goodwe ET Series User Manual

04 OTHER
Relay Check Self checking of
Failure relay failure
DC Injection
/
High
EEPROM R/W
/
Failure
Internal
SPI Failure communication
failure
DC Bus High BUS voltage is
over-high
Back-Up Over Back-up side is
Load over loaded

4.2 Troubleshooting

Checks Before Turning On AC Power
• Battery connections: Confirm that the connections between the ET and battery and that the
polarities (+/-) are not reversed. Refer to figure 4.2-1
• PV input connection: Confirm the connections between the ET and PV panels and that the
polarities (+/-) are not reversed. Refer to figure 4.2-2.
• On-grid & backup connections: Confirm that the on-grid is connected to the power grid
and that the backup is connected to the loads and that the polarities (e.g. L1/L2/L3/N are in
sequence) are not reversed. Refer to figure 4.2-3.
• Smart Meter & CT connections: Make sure that the Smart Meter and CT are connected
between the house loads and the grid and follow the Smart Meter direction sign on the CT. Refer
to figure 4.2-4.
Neutral & ground Check (use multi-meter) if there is
cables are not high voltage (normally should be
connected well on lower than 10V) between N & PE
AC side or just an cable on the AC side. If the voltage
occasional failure is higher than 10V, it means the
Neutral & ground cable are not
connected well on AC side or restart
inverter.
The inverter .Try to restart the inverter,check
detects a higher if it still occurs.If not,it is just an
DC component in occasional situation.Otherwise,
AC output contact after-sales immediately.
Caused by a Try to restart the inverter,check
strong external if it still occurs.If not,it is just an
magnetic field etc. occasional situation.Otherwise,
contact after-sales immediately.
Caused by a Try to restart the inverter,check
strong external if it still occurs.If not,it is just an
magnetic field etc. occasional situation.Otherwise,
contact after-sales immediately.
/ Try to restart the inverter. Check
if the fault still occurs. If not, it
means it is caused by an occasional
situation,or contact after-sales.
Total back-up load Decrease back-up loads to make
power is higher sure the total load power is lower
than the back-up than back-up nominal output power
nominal output (please refer to page 24).
power
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User Manual V1.0-2021-06-15